Casio fx-9750G PLUS User Manual Page 354

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326
19-3 Compound Interest Calculations
This calculator uses the following standard formulas to calculate compound
interest.
uu
uu
uFormula I
PV+PMT × + FV
i(1+ i)
n
(1+ i)
n
(1+ i ×
S)[(1+ i)
n
–1] 1
= 0
i =
100
I %
Here:
PV= –(PMT × + FV × )
β
α
FV=
β
PMT ×
+ PV
α
PMT=
β
PV
+ FV ×
α
n =
log
{ }
log(1+ i)
(1+ i S ) PMT+PVi
(1+ i S ) PMTFVi
i(1+ i)
n
(1+ i × S)[(1+ i)
n
–1]
=
α
(1+ i)
n
1
=
β
F(i) = Formula I
+ (1+ i S)[n(1+ i)
n–1
]+S [1–(1+ i)
n
]
nFV (1 + i)
n–1
ii
PMT
(1+ i S)[1– (1+ i)
n
]
F(i)'=
[]
uu
uu
uFormula II (I% = 0)
PV + PMT × n + FV = 0
Here:
PV = – (PMT × n + FV )
FV = – (PMT × n + PV )
PV :present value
FV : future value
PMT : payment
n : number of compound periods
I
%
: annual interest rate
i is calculated using Newton’s Method.
S = 1 assumed for beginning of term
S = 0 assumed for end of term
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